Are there different types of meningococcal meningitis?
There are many different strains of the N meningitidis bacterium. These different strains are identified by the specific polysaccharide (sugar) that the bacterium contains in its outer capsule and are classed as serogroups. The three most common serogroups are A, B and C. In Europe the most common serogroups are B and C. Serogroup A is common in Africa, Saudi Arabia and Asia.
